Click Event Not Firing - Cannot Change Focus - Cannot Close Form

Question

I have a Windows Forms Application. I have several forms in this application (a main form, and several specialized forms), and on only one form, click events are not firing

Answer 1

I have discovered the issue after further testing.

I the issue is not with button events, but with the form becoming blocked after making a selection from a drop down box.

I have not yet discovered why the form blocks after the drop down is selected (it has no events, but does have databinding, so there are some possible causes there).

Thank you for all your help!